“…Furthermore, several genes that code for heat stress proteins (Moltó et al , 1992) and others involved in thermal adaptation (Laayouni et al , 2007) are located in this arrangement. In addition, the O 3+4 and O 3+4 + x frequencies in the old Apatin population (June 1994) were 53% and 59% lower, respectively, that in all other southern Balkan populations (Jastrebac, June 1993; Petnica, June 1995; Kamariste, June 1996; Zanjic, June 1997; Djerdap, June 2001; Avala, June 2004) (Zivanovic et al , 2002; Zivanovic and Marinkovic, 2003; Zivanovic, 2007; Zivanovic and Mestres, 2010a,b). In contrast, the frequencies of the O 3+4 and O 3+4 + x arrangements in the new Apatin population (2008 + 2009 sample) were no much lower (by 19% and 28%, respectively) than those previously reported for the southern Balkan populations.…”